An a.c. supply may be used directly for all these except for one. Identify the one, for which itcannot be used(a) Heating(b) Lighting(c) Transforming voltage(d) Electroplating
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The a.c supply cannot be used for electroplating.
Explanation
- An alternating current cannot be utilised for electroplating also because ac polarity of something like the battery changes with time, causing the ions that must be deposited on the surface [for electroplating] to oscillate back and forth within the electrolyte, prohibiting electroplating.
- Electroplating is the method of putting a very thin layer of another metal on a metal or metal item using a direct electric current. The metals are partially dissolved, and a chemical link is formed between them. Electroplating produces a layer that is typically 0.0002 inches thick.
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